"שנת תרפפו" meaning in Hebrew

{
  "forms": [
    {
      "form": "שְׁנַת תָּרָפָּפּוּ",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "sh'nát tarapapú",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "f",
        "tr": "sh'nát tarapapú",
        "wv": "שְׁנַת תָּרָפָּפּוּ"
      },
      "expansion": "שְׁנַת תָּרָפָּפּוּ • (sh'nát tarapapú) f",
      "name": "he-noun"
    }
  ],
  "lang": "Hebrew",
  "lang_code": "he",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Hebrew entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "ancient times"
      ],
      "id": "en-שנת_תרפפו-he-noun-Wx3zMZRU",
      "links": [
        [
          "ancient",
          "ancient"
        ],
        [
          "times",
          "times"
        ]
      ],
      "raw_glosses": [
        "(slang) ancient times"
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "word": "שנת תרפפו"
}

{
  "forms": [
    {
      "form": "שְׁנַת תָּרָפָּפּוּ",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "sh'nát tarapapú",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "f",
        "tr": "sh'nát tarapapú",
        "wv": "שְׁנַת תָּרָפָּפּוּ"
      },
      "expansion": "שְׁנַת תָּרָפָּפּוּ • (sh'nát tarapapú) f",
      "name": "he-noun"
    }
  ],
  "lang": "Hebrew",
  "lang_code": "he",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Hebrew entries with incorrect language header",
        "Hebrew feminine nouns",
        "Hebrew lemmas",
        "Hebrew multiword terms",
        "Hebrew noun entries missing plural construct forms",
        "Hebrew noun entries missing plural forms",
        "Hebrew noun entries missing singular construct forms",
        "Hebrew nouns",
        "Hebrew slang",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "ancient times"
      ],
      "links": [
        [
          "ancient",
          "ancient"
        ],
        [
          "times",
          "times"
        ]
      ],
      "raw_glosses": [
        "(slang) ancient times"
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "word": "שנת תרפפו"
}